Born in Vienna, Froschauer received his musical education with the Wiener Sängerknaben boys' choir.[1][2][3] He studied piano, horn, composition and conducting at the Wiener Musikakademie.[2]
From 1953 to 1965 he conducted one of the choirs of the Wiener Sängerknaben. As Kapellmeister he led this ensemble on 22 international tours.[1][4] He conducted the choir in recordings and the film Almost Angels.[1] At the beginning of the 1960s, as musical director of the Walt Disney Productions in Vienna, he also directed several music films with the Vienna Symphony Orchestra. From 1968 to 1991 Froschauer was, at times simultaneously, solo répétiteur and choir director at the Vienna State Opera[3] as well as choir director of the Wiener Singverein[4] and the Bregenzer Festspiele.[2]
As a close collaborator of Herbert von Karajan from 1989,[4] he was involved in the preparation of numerous concerts, recordings, and television recordings at Salzburg Festival, Berliner Festwochen, and Wiener Festwochen.[1][3]
Froschauer worked for the Westdeutscher Rundfunk Köln from 1992, first as choir director of the WDR Rundfunkchor Köln, then from 1997/99 to 2003 also as chief conductor of the WDR Rundfunkorchester Köln,[4] of which he later became honorary conductor.[5]
For many years, Froschauer and two other colleagues have also conducted the Sunday masses in the Vienna Hofburgkapelle [de], in which the Wiener Sängerknaben also took part.[6] Froschauer died in Vienna at age 85.[2][5]
His son is the violinist Daniel Froschauer, chairman of the Vienna Philharmonic.[2]
